Arithmetic operating means

Details Arithmetic operating means Arithmetic operating means

1990-10-23

1992-03-17

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, 354409, G01C 300, G01C 500, G03B 300

Patent

active

050962892

ABSTRACT:
An object distance measuring device in a camera, including an active object distance measuring mechanism for emitting measuring light toward an object to be photographed and receiving the measuring light as reflected by the object to detect the object distance is provided. A measuring zone is provided in a finder to indicate a measuring position at which the measurement of the object distance by the active object distance measuring mechanism is effected. A device is provided for varying the position of the measuring zone in the finder, and a device for varying the direction of the emission of the measuring light by the active object distance measuring mechanism in accordance with the varied position of the measuring zone is also provided.

REFERENCES:
patent: 4019191 (1977-04-01), Miyata
patent: 4021823 (1977-05-01), Miyata
patent: 4047187 (1977-09-01), Mashimo et al.
patent: 4459004 (1984-07-01), Morizumi
patent: 4470681 (1984-09-01), Johnson
patent: 4487495 (1984-12-01), Kimata et al.
patent: 4534636 (1985-08-01), Sugawara
patent: 4574314 (1986-03-01), Weinblatt

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